Linear shafts are a subset of linear guides and provide stability and precision in linear motion systems. Varying precision requirements are placed on linear shafts to ensure that movements are transferred at low-friction, accurately, and reliably. These requirements specify roundness, straightness, perpendicularity as well as the concentricity of the linear shaft. MISUMI offers linear shafts in standard and precision versions. In this article, you will learn about the different features, when to use which variant, and what precision requirements are all about.